As you are trying to move a heavy box of mass mmm, you realize that it is too heavy for you to lift by yourself. There is no one around to help, so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. You pull up on the rope to lift the box.
Use g for the magnitude of the acceleration due to gravity and neglect friction forces.
Once you have pulled hard enough to start the box moving upward, what is the magnitude F of the upward force you must apply to the rope to start raising the box with constant velocity?
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What object a collides with object b and bounces back its final momentum is?
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Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?
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Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?
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As you are trying to move a heavy box of mass mmm, you realize that it is too heavy for you to lift...
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